Jack-cord distributer.



I PATBRTED FEB 16,1906. B. sALZMAi;

JACK 001w DISTRI.

APPLICATION FILED NM \P, 1905.

.To all whom it may concern.-

UNITED STATES PATENT OFFICE.

BENNo sALa'MANN, or BERIJNI"&ER1VIANY.

Specification of Letters Patent.

Patented Feb. 18, 1906.

Application filed November 16, 1906. Serial No. 287,724.

Be it known that I, BENNO SALZMANN, a citizen of the Empire of Germany, residing at Berlin, in the Empire of Germany, have invented a new and useful Jack-Cord Distributer, of which the following is a specification.

In telephone-exchanges with separate distribution switchboards and with separate connection-switchbcards it is exceedingly desirable that the jack-cords should be shifted easily and uickly for connecting at will any inquiring-p ug in either distribution-switchboard with an jack in either connectionswitchboard. l or this purpose hitherto jackcord distributers have been in use} but they were disposed in the several distributionswitchboards themselves near the operators and presented the disadvantage that their orfkation was difficult and took up comparatively much time, as it was necessary to draw or handle very long jack-cords.

My invention relates toa jack-cord distributer which is independent of both the distribution-switchboards and the connectionswitchboards and is inserted between them. This jack-cord distributor presents the advantage that the several cords coming from the inqniring-plugsin the' distribution-switch boards can be connected at will with the several jack-cords leading to the jacks in the conncction-switchboards and disconnected therefrom and shifted in a most easy and quick manner.

I will now roceed to describe my invention with re 'erence to the accompanying drawing, which represents a dia ram.

a a a a" or represent several distributionsn'itchboards, each controlled by an operator, and e e e e 6 represent several connection-switchboards, each under the control of an operator. n\c denotes a jack-cord distributer according to my invention. Cords b" b b b are shown as connecting the inquiring-plugs f f f" f f 5 in the several distribuflonswitchboards a c a a a with binding-posts g g g g g in the jack-cord distributer c. J ack-cords d cl (1 d (1 connect the jacks IL" If k k 7: in the several connection-switchboards e e e e" c with correspond ing bindingposts' h h" k h k in the j ack-cord distributer c. The binding-posts g g g q g' and h h h h h niafy be replaced bye uivalent known Ineans,- i so preferred. boparate cords 1, a z z t are employed for connecting at will the several binding-posts g g g g of the one row with the several binding-posts h h h h 7B5 of the other row, as is, for example, indicated by the dotted lines. The connection 0; the cords 'i 'i i; it with 311;] r;- spective bin in -posts g g g 9 an 2 h h k or their equival ents may be efl'ected in. any known n annenbe it by soldering or screwing or by means of intermediate plugs,

(say similar to those'in the known springcommutators.) Thein uiring-plugs f f f f f 5 and the jacks k 162' 7: k are shifted by the respective operators in the. usual manner. Where so re uired, also the cords b b b b b andd. d d 4 d ma be shifted. The cords 'i i i i i'are constantly shifted for connecting either inquiring-plug f with either jack is, as ma be required.

at I claim as my invention to secure by Letters Patent, is

1. In a telephone-exchange, the combination with a plurality of distribution-switchboards each provided with a hearing-plug, of a plurality of connection-switchboards each provided with a jack, a jack-cord distributor comprising two rows of binding-posts or the like, a plurality of cords connecting the hearing-plugs in said plurality of distributionswltchboards with the binding-posts or the like in the one row of said j ack-cord distributer, a plurality of jack-cords connecting the jacks in said plurality of connection-switchboards with the bindingosts or the like in and desire the other row of said, jac -cord distributor,

shift-able cords for I connectin at will the several binding-posts or the li e of the one row with those of the other row in said jackcord distributor, and means for fastenin the ends of said shiftable cords on the bin ingposts or the like'in said jack-cord distributer.

2. In a telephone-exchange, the combination with a plurality of distribution-switch boards each provided with a hearing-plug, of a plurality of connection-switchboards each provided with a jack,a jack-cord distributor comprising two rows of bindin -posts or the like, a plurality of cords shiftab y connecting the marin -plugs insaid plurality of distributiori-switcliboards with the binding-posts or the like in the onerow of said jack-cord distributer, a pluralit of jack-cords shiftably conneoting the jac s in said plurality of connection-switchboards with the binding-posts or the like in the other row of said jack-cord distribufier, shiffiable cqms Ior connecting at will E name {10 this specificatinn in. The presence oi? the several binding-posts 0r thehke of the one I mvo subscribing witnesses.

row with those of the. other row in said "ack- -v v T! w r, A

cord distiibuter, and means for fastening the TAO 5 ends of said shiftable cords on the binding- Witnesses:

posts or the like in said jack-cord distribut-cr. M. SlTTENMANN .In testimony whereof I have signed my RICHARD RISENSTILL. 

